Overview This is for the vaccination of healthy cattle as an aid in the prevention and control of pinkeye (infectious bovine keratoconjunctivitis) caused by Moraxella bovis. SolidBac® Pinkeye IR/PR makes vaccination against pinkeye caused by Moraxella bovis an easy, one-step process. SolidBac Pinkeye IR/PR combines two, tiny antigen pellets -- an Immediate Release (IR) pellet and a Programmed Release (PR) pellet – and delivers them simultaneously using the SoliDoser® applicator.